EP 1015187 A1 20000705 - PROCESS FOR TIGHTENING SCREW JOINTS
Title (en)
PROCESS FOR TIGHTENING SCREW JOINTS
Title (de)
VERFAHREN ZUM SPANNEN VON SCHRAUBVERBINDUNGEN
Title (fr)
PROCEDE DE SERRAGE DE JOINTS A VIS
Publication
Application
Priority
- SE 9800727 W 19980422
- SE 9701499 A 19970422
Abstract (en)
[origin: WO9847665A1] A method for tightening screw joints up to a predetermined target torque level (TF) by a power tool which has a torque delivering output shaft and which is connected to a power control unit by which the rotation speed (v) of the output shaft is adjustable, wherein each tightening process comprises a primary phase (I) performed at one or more substantially constant speed levels and a final phase (II) performed at a variable rotation speed (v) having an average which is typically lower than the average of the primary tightening phase (I) speed levels and which has a lowest final level (v2) at the target torque level (TF). The rotation speed (v) during the final tightening phase (II) is varied in accordance with any suitable strategy for obtaining a short as possible cycle time without risking overtightening.
IPC 1-7
IPC 8 full level
B23P 19/06 (2006.01); B25B 23/14 (2006.01); B25B 23/147 (2006.01); B25B 23/151 (2006.01)
CPC (source: EP)
B23P 19/066 (2013.01); B25B 23/14 (2013.01); B25B 23/147 (2013.01)
Citation (search report)
See references of WO 9847665A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 9847665 A1 19981029; DE 69807090 D1 20020912; DE 69807090 T2 20030508; EP 1015187 A1 20000705; EP 1015187 B1 20020807; JP 2001521448 A 20011106; JP 5054862 B2 20121024; SE 508963 C2 19981123; SE 9701499 D0 19970422; SE 9701499 L 19981023
DOCDB simple family (application)
SE 9800727 W 19980422; DE 69807090 T 19980422; EP 98917932 A 19980422; JP 54560898 A 19980422; SE 9701499 A 19970422